import { apiClient } from './client';
import { parsePlayer } from '$lib/schemas';
import type { Player, PlayerMeta, TrackPlayerResponse } from '$lib/types';
import { transformPlayerProfile, type LegacyPlayerProfile } from './transformers';

/**
 * Player API endpoints
 */
export const playersAPI = {
	/**
	 * Get player profile with match history
	 * @param steamId - Steam ID (uint64 as string to preserve precision)
	 * @param beforeTime - Optional Unix timestamp for pagination
	 * @returns Player profile with recent matches
	 */
	async getPlayer(steamId: string, beforeTime?: number): Promise<Player> {
		const url = beforeTime ? `/player/${steamId}/next/${beforeTime}` : `/player/${steamId}`;
		const data = await apiClient.get<Player>(url);

		// Validate with Zod schema
		return parsePlayer(data);
	},

	/**
	 * Get lightweight player metadata
	 * @param steamId - Steam ID (uint64 as string to preserve precision)
	 * @param limit - Number of recent matches to include (default: 10)
	 * @returns Player metadata
	 */
	async getPlayerMeta(steamId: string, limit = 10): Promise<PlayerMeta> {
		// Use the /player/{id} endpoint which has the data we need
		const url = `/player/${steamId}`;
		const legacyData = await apiClient.get<LegacyPlayerProfile>(url);

		// Transform legacy API format to our schema format
		const transformedData = transformPlayerProfile(legacyData);

		// Validate the player data
		// parsePlayer throws on validation failure, so player is always defined if we reach this point
		const player = parsePlayer(transformedData);

		// Calculate aggregated stats from matches
		const matches = player.matches || [];
		const recentMatches = matches.slice(0, limit);

		const totalKills = recentMatches.reduce((sum, m) => sum + (m.stats?.kills || 0), 0);
		const totalDeaths = recentMatches.reduce((sum, m) => sum + (m.stats?.deaths || 0), 0);
		const totalKast = recentMatches.reduce((sum, _m) => {
			// KAST is a percentage, we need to calculate it
			// For now, we'll use a placeholder
			return sum + 0;
		}, 0);

		const wins = recentMatches.filter((m) => {
			// match_result 1 = win, 2 = loss
			return m.match_result === 1;
		}).length;

		const avgKills = recentMatches.length > 0 ? totalKills / recentMatches.length : 0;
		const avgDeaths = recentMatches.length > 0 ? totalDeaths / recentMatches.length : 0;
		const winRate = recentMatches.length > 0 ? wins / recentMatches.length : 0;

		// Find the most recent match date
		const lastMatchDate =
			matches.length > 0 && matches[0] ? matches[0].date : new Date().toISOString();

		// Transform to PlayerMeta format
		const playerMeta: PlayerMeta = {
			id: parseInt(player.id, 10),
			name: player.name,
			avatar: player.avatar, // Already transformed by transformPlayerProfile
			recent_matches: recentMatches.length,
			last_match_date: lastMatchDate,
			avg_kills: avgKills,
			avg_deaths: avgDeaths,
			avg_kast: recentMatches.length > 0 ? totalKast / recentMatches.length : 0, // Placeholder KAST calculation
			win_rate: winRate
		};

		return playerMeta;
	},

	/**
	 * Add player to tracking system
	 * @param steamId - Steam ID (uint64 as string to preserve precision)
	 * @param authCode - Steam authentication code
	 * @returns Success response
	 */
	async trackPlayer(steamId: string, authCode: string): Promise<TrackPlayerResponse> {
		const url = `/player/${steamId}/track`;
		return apiClient.post<TrackPlayerResponse>(url, { auth_code: authCode });
	},

	/**
	 * Remove player from tracking system
	 * @param steamId - Steam ID (uint64 as string to preserve precision)
	 * @returns Success response
	 */
	async untrackPlayer(steamId: string): Promise<TrackPlayerResponse> {
		const url = `/player/${steamId}/track`;
		return apiClient.delete<TrackPlayerResponse>(url);
	},

	/**
	 * Search players by name (cancelable)
	 * @param query - Search query
	 * @param limit - Maximum results
	 * @returns Array of player matches
	 */
	async searchPlayers(query: string, limit = 10): Promise<PlayerMeta[]> {
		const url = `/players/search`;
		const data = await apiClient.getCancelable<PlayerMeta[]>(url, 'player-search', {
			params: { q: query, limit }
		});
		return data;
	}
};

/**
 * Player API with default export
 */
export default playersAPI;